i. 146;

difference in the convolutions of, in different races of men, i. 216.

BRAKENRIDGE, Dr., on the influence of climate, i. 115.

BRAUBACH, Prof., on the quasi-religious feeling of a dog towards his master, i. 68; on the self-restraint of dogs, i. 78.

BRAUER, F., on dimorphism in _Neurothemis_, i. 363.

BRAZIL, skulls found in caves of, i. 218; population of, i. 225; compression of the nose by the natives of, ii. 352.

BREAK between man and the apes, i. 200.

BREAM, proportion of the sexes in the, i. 308.

BREEDING, age of, in birds, ii. 214.

BREEDING season, sexual characters making their appearance in the, in birds, ii. 80.

BREHM, on the effects of intoxicating liquors on monkeys, i. 12; on the recognition of women by male _Cynocephali_, i. 13; on revenge taken by monkeys, i. 40; on manifestations of maternal affection by monkeys and baboons,